TY - JOUR
T1 - Optimum detection of multiplicative watermarks using locally optimum decision rule
AU - Cheng, Qiang
AU - Huang, Thomas S.
PY - 2001
Y1 - 2001
N2 - Multiplicative watermarks have very strong robustness, and they are well-suited for the copyright protection. In this paper, new detector structures for the optimum detection of multiplicative watermarks are derived. It is shown that the observations should be raised to the power of the shape parameter of the distribution before they are correlated with the watermark. For commonly used Gaussian distribution a quadratic correlator is obtained. A generalized linear correlator is also derived based on the Laplacian distribution. The performance analysis of the proposed detector is examined. The theoretical results are verified by the experiments.
AB - Multiplicative watermarks have very strong robustness, and they are well-suited for the copyright protection. In this paper, new detector structures for the optimum detection of multiplicative watermarks are derived. It is shown that the observations should be raised to the power of the shape parameter of the distribution before they are correlated with the watermark. For commonly used Gaussian distribution a quadratic correlator is obtained. A generalized linear correlator is also derived based on the Laplacian distribution. The performance analysis of the proposed detector is examined. The theoretical results are verified by the experiments.
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U2 - 10.1109/ICME.2001.1237718
DO - 10.1109/ICME.2001.1237718
M3 - Article
AN - SCOPUS:33745167484
SN - 1945-7871
SP - 309
EP - 312
JO - Proceedings - IEEE International Conference on Multimedia and Expo
JF - Proceedings - IEEE International Conference on Multimedia and Expo
M1 - 1237718
ER -